I have had problems with streaming video during

Doing my best to give you a correct solution and understanding
Issue : delays in streaming video
Environment :
ISP : Bellsouth
Router : wireless WRT150N
Solution :
"Downside to streaming"
Traffic jams.
Internet isn't a direct pipeline from the source to you. Streamed content passes through many other computers on its way to your computer via your ISP. If any one of them is carrying too much other traffic, the streamed content may be interrupted and pause. Streamed content is "buffered" to help avoid this, but sometimes it's unavoidable.
(test the downstream and upstream speed and alose test the download )
(Checked deleting the temporary files and folders)
(Checked firewall and Anti virus)
A slow computer :
if you have too many applications open, it could slow down your media streaming. If you notice things are sluggish, close all unnecessary applications and windows running on your computer. Just keep your Web browser and your media player open.
Noisy phone lines.
phone line that isn't free of noise (humming, crackling), that's not good for streaming (or Web browsing). Disconnect any phones that cause a buzz or hum.